When calculating the width of a text for drawing decorations on top, we use the effective advance of the whole text after it has been through the shaper. However, in the case of QStaticText and QGlyphRun, there is shortcut: Since we only have the glyph indexes and position of each glyph, we use the position + advance of the right-most glyph to find the right-most edge of the decoration. For this, however, we use the advance of the glyph *out of context* of the rest of the string, because the whole idea is to avoid doing the shaping of the string with every draw call. In some rare cases, the advance of the right-most character, in the context of the string, is different from the advance of the standalone glyph. Now, one way of fixing this would be to store the width of the text in QStaticText and QGlyphRun, but since it is a very rare artifact which is barely visible, I have opted to just work around it in the test instead, the workaround being to force integer metrics so that we don't get the small 0.2 pixel error. Task-number: QTBUG-55217 Change-Id: I8d16d52f2ef27275cabb7d3865aeeaa31617ba3d Reviewed-by: Lars Knoll <lars.knoll@qt.io> |
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| auto | ||
| baselineserver | ||
| benchmarks | ||
| global | ||
| manual | ||
| shared | ||
| README | ||
| tests.pro | ||
README
This directory contains autotests and benchmarks based on Qt Test. In order
to run the autotests reliably, you need to configure a desktop to match the
test environment that these tests are written for.
Linux X11:
* The user must be logged in to an active desktop; you can't run the
autotests without a valid DISPLAY that allows X11 connections.
* The tests are run against a KDE3 or KDE4 desktop.
* Window manager uses "click to focus", and not "focus follows mouse". Many
tests move the mouse cursor around and expect this to not affect focus
and activation.
* Disable "click to activate", i.e., when a window is opened, the window
manager should automatically activate it (give it input focus) and not
wait for the user to click the window.